package com.xxxx.server.config.security.component;

import com.xxxx.server.pojo.Menu;
import com.xxxx.server.pojo.Role;
import com.xxxx.server.service.IMenuService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;

import java.util.Collection;
import java.util.List;

/**
 * 权限控制
 * 根据请求url分析请求所需的角色
 *
 * */
@Component
public class CustomFilter implements FilterInvocationSecurityMetadataSource {
    @Autowired
    private IMenuService menuService;
    AntPathMatcher antPathMatcher=new AntPathMatcher();

    @Override
    public Collection<ConfigAttribute> getAttributes(Object o) throws IllegalArgumentException {
        //获取请求的url
        String requestUrl =((FilterInvocation) o).getRequestUrl();
        List<Menu> menus=menuService.getMenuWithRole();
        for(Menu menu:menus){
            //判断请求url与菜单角色是否匹配
            if(antPathMatcher.match(menu.getUrl(),requestUrl)){
//              String[] str=menu.getRoles().stream().map(Role::getName).toArray(String[]::new);
                List<Role> roles=menu.getRoles();
                String[] str=new String[roles.size()];
                for(int i=0;i<roles.size();i++){
                    str[i]=roles.get(i).getName();
                }
                return SecurityConfig.createList(str);

            }
        }
        //没匹配的url默认登录即可访问
        return SecurityConfig.createList("ROLE_LOGIN");
    }

    @Override
    public Collection<ConfigAttribute> getAllConfigAttributes() {
        return null;
    }

    @Override
    public boolean supports(Class<?> aClass) {
        return false;
    }
}
